Floor-dressing machine.



G. J. KEPPLINGER.

FLOOR DRESSING MACHINE.

APPLICATION FILED JULY7, 1909.

Patented May 24, 1910.

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UNITED STATES PATENT ornron.

GEORGE J. KEPPLINGER, OF DWIGHT, ILLINOIS.

FLOOR-DRESSING MACHINE.

To all whom it may concern:

Be it known that I, GEORGE J. KEPPLIN- GER, a citizen of the United States, residing at Dwight, in the county of Livingston and State of Illinois, have invented a new and useful Floor-Dressing Machine, of which the following is a specification.

It is the object of the present invention to provide an improved construction of floor dressing machine, and the invention aims, primarily, to provide a machine of this class which may be employed both for scraping and for sand-papering a floor.

The machine of the present invention embodies a scraping blade and supporting head therefor, and one feature of the invention resides in so mounting this blade-supporting head that it may be adjusted not only angularly laterally, but also angularly vertically, so that the blade may be positioned at practically any desired angle. Ordinarily, the blades of such machines are capable of being positioned only with their cutting edges at right angles to the line of travel of the machine, but a blade so positioned will tend to jump or vibrate when moving over rough or uneven floor surfaces; whereas, a blade positioned at some other angle with respect to the line of travel will not have this tendency.

Another feature of the invention resides in the construction of the sand-papering device of the machine, this device comprising a frame and a sand-paper block which is so mounted in the frame as to permit of slight lateral rocking, whereby the block will adapt itself automatically to uneven places in the floor being treated. Ordinarily, such blocks are fixedly mounted in their frames, so that when they come in contact with an uneven portion of the floor surface, the portions of the floor surface surrounding this portion or adjacent thereto, will not be treated.

The invention aims further to so construct the sand-paper holding block that the paper may be readily and securely stretched thereon, and will be held fiat.

In the accompanying drawings, Figure 1 is a side elevation of the machine embodying the present invention, the machine being illustrated in position for scraping a floor.

Specification of Letters Patent.

Application filed July 7, 1909.

Patented May 24, 1910.

Serial No. 506,358.

Fig. 2 is a top plan view of the machine in condition for sand-papering a floor. Fig. 3 is a perspective view in detail of the sandpapering attachment. Fig. 4: is a horizontal sectional view 011 the line 4-4: of Fig. 1. Fig. 5 is a perspective view of one member of the knife-carrying head. Fig. 6 is a similar view of the other member of said head.

In the drawings, the machine is illustrated as embodied, in part, in a body casting 10, which is substantially rectangular and has a thickened front wall 11, which will be presently more specifically described. Stub shafts 12 project from each side wall of the body 10, and upon the said stubshafts are journaled supporting wheels 13, which serve to support the body for travel over the surface to be treated. The sides of the body 10 are further provided each adjacent its upper edge with a threaded stud 1 1 engaging through an opening in one arm of a yoke 15 at the lower end of a handle 16, there being nuts 17 threaded upon said studs whereby to hold the arms of the yoke thereon. Brace arms 18 are connected adjustably at their upper ends to the arms 15 of the yoke of the handle, and, at their lower ends these arms connect to the stub shafts 12 at the respective sides of the body 10, and the arms serve to support the handle in position for use, or, in other words, in raised posi tion.

A-weight block 19 is formed with a rearwardly extending boss 20, which is formed with an opening through which passes a bolt 21 securing the weight block upon the top of the body 10 of the machine. The forward thickened side 11 of the said body casting of the machine is formed with a recess 22, which is substantially semicylindrical, and in which is disposed a block 24, which constitutes one member of the knife-supporting head of the machine. The said wall 11 of the body casting of the machine is further formed with an opening 23, which extends therethrough from front to rear through that portion in which the recess 22 is formed, and the block 24 is also formed with an opening, indicated by the numeral 25, through which and the opening 23 is passed a bolt 26, serving to secure the block in place in the recess 22. This bolt 26 passes also through a block which serves as a washer, and which is indicated by the. numeral, 27, and which is disposed in a recess formed in the forward face of the block 22, there being a nut 28 threaded upon the bolt 26 and bearing against the said washerblock 27. The opening 25 in the block 24 is of greater diameter than the opening in the forward wall 11 of the body casting of the machine, so that the block may be adjusted angularly within the recess22, which it occupies, so. that its forward face may assumev a number of positions at angles to the line of travel of the machine. The forward face of the block 24 is formed with, a concave seat indicated by the numeral 29, and receiving the rear portion of a knife carrying head member indicated by the" numeral'30. In vertical planes to each side of the plane in, which the opening 25 is located, the block 24 is formed with. vertically extending slots 31, and the rear portion of the blade-carrying head section 30 is formed at corresponding points with openings 32, which, when the, said head section is, disposed in the concave seat 29,, register with the slots 3-1, there being bolts 33. passed through the said openings 32 and slots3l, whereby to adjustably secure the knifecarrying head: section 30. to the block 24. The. forward portion, of the knife-carrying section 30 is formed. with a downwardly for wardly. inclined planefacc 34, against which is adapted to, be disposed the scraper blade which is indicated in Fig, 1 of the drawings by the numeral 35, the

practically any desired. angle of inclination,

adjusting the this adjustment being had by Ody casting of block 24 with respect to the the machine, section with respect to the block. further be understood that, 19 serves tohold the blade 35 with its scraping edge in contact with the floor surface to be treated, and that'by moving the device over the said, surface ofsaid scraping edge of the blade will perform. its proper. function.

It. is desirable that a. machine of this general class should embody means for finishing a floor. surface which has been scraped, and. such means is usually embodied in. a sand-paper carrying block,.and is soshown in the present instance. Ordinarily, however, such blocks are rigidly mounted in a It will blade being held in. place through the medium of stud bolts 36,, threaded into threaded sockets 37, in the and the knife-carrying head.

the weight block.

traveling frame, and cannot adapt themselves to irregularities in the floor surface. As heretofore stated, it is one object of the present invention to improve the construction of such devices by providing a sandpaper carrying block which may have such rocking movement as to insure of its adjusting itself to such irregularities in the surface being treated. In the present instance, the sand-paper holding device is illustrated as embodied in part in a block 38, which is preferably rectangular and has itsupper face; at its front and rear ends beveled as at 31, and; provided with upstanding studs 32, upon which. are threa ed nuts 33. Plates 34 are disposed upon. the beveled" portions of the upper surface of theblock 38, and the nuts 32 bear down upon the plates 34 and serve to firmly clampbetween them and the said beveled surfaceportion of the block, 38 the front and. rear edges: of a sheet of sandpaper indicated by the numeral 35 this sheet extending along the under surface of the block 38, and bein stretched: to. lie flat thereagainst. Upon thev upper face of the block 38 there are secured a plurality of bearings, one indicated by the numeral 40 being located. substantially midway between theside edges of the block 38 and two, indi cated by the numeral 41, being located one at each, side edge. These latter bearings, indicated by the'numeral 41, are formed each with. a slot 42, whereas the intermediate bearing 40. is formed with an opening 43, and, passing through the opening 43 in the bearing 40, and. the slots 42 in the bearings 41, is a shaft 44, which, at its ends, is secured in openings inthe extremities of arms 45, constituting side. members of a frame 46, which is adapted. to be secured. upon the, face 34 of the knife-carrying head section 30 in place of the blade 35, when the machine is to be used in dressing av scraped surface.

It will. be understood from the foregoing description that the sand-paper coveringthe under surface of the block 30 willbe held fiat against the floor surface being treated, and that said heador block may have a slight rocking-- movement in the frame 46, whereby to-permit of. the sand pa er carryingblock adapting itself to irregu arities in, the floor surface.

\Vhat is claimed is 1. In a machine of the class described, a body, a handle projecting therefrom, wheels supporting-the body, a head supported at the front ofv the body, a frame, carried by the. head and having a. transverse rod, a. sand. paper block having intermediate. and end bearings thereon for the said rod, thesaid end.bearings loosely receiving-therodwhereby the head. may have transverse rocking: movement upon the intermediate bearing;

2. In a machine of the class described, a body, handles rojecting rearwardly from the body, whee s supporting the body, the body at its front being formed with a recess, a head section fitted in the recess, means holding the said head section at angular adjustment in the recess, a second head section disposed against the first mentioned section and held thereon for angular adjustment,

and a floor treating device carried by the 10 last mentioned head section.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

GEORGE J. KEPPLINGER. Witnesses:

R. D. GREGG, C. N. HOFFMAN. 

